40240445 has 16 divisors (see below), whose sum is σ = 58434048. Its totient is φ = 25969920.

The previous prime is 40240441. The next prime is 40240451. The reversal of 40240445 is 54404204.

It is not a de Polignac number, because 40240445 - 2² = 40240441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40240445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40240441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33221 + ... + 34410.

It is an arithmetic number, because the mean of its divisors is an integer number (3652128).

Almost surely, 2^40240445 is an apocalyptic number.

It is an amenable number.

40240445 is a deficient number, since it is larger than the sum of its proper divisors (18193603).

40240445 is a wasteful number, since it uses less digits than its factorization.

40240445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67660.

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 40240445 is about 6343.5356860350. The cubic root of 40240445 is about 342.6790794548.

Adding to 40240445 its reverse (54404204), we get a palindrome (94644649).

The spelling of 40240445 in words is "forty million, two hundred forty thousand, four hundred forty-five".